SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('ad405c7d9a85bf941374ac49299a3706','0','3.138.116.20','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715022181','attachment.php?attachmentid=4532','0','0','')
mysql error: Duplicate entry 'ad405c7d9a85bf941374ac49299a3706' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 06.05.2024 @ 21:03
Script: /attachment.php?attachmentid=4532
Referer: